Pour pie mix into pie shell. Sprinkle with pecans and drizzle with maple syrup. Place on the center rack of the oven and cook for 40 minutes. Remove from oven and cover with aluminum foil to prevent crust from burning. Return to oven at 350 degrees for 40 more minutes. The pie is cooked when a toothpick inserted in the center comes away cleanly. Allow to cool and then refrigerate pie for 3 hours or overnight.